rinid family, belonging to
the same genus as the roach and dace. It is one of the largest of its
family, attaining a length of 2 ft. and a weight of 5 to 7 lb. It does
not avoid running waters, and is fond of insects, taking the fly
readily, but its flesh, like that of the other _Leucisci_, is tasteless
and full of bones. It is common in Great Britain and the continent of
Europe. In America the name of "chub" is given to some other members of
the family, and commonly to the horned dace (_Semnotilus
atromaculatus_); well-known varieties are the river chub (_Hybopsis
kentuckiensis_) and Columbia river chub (_Mylochilus caurinus_).

CHUBB, CHARLES (d. 1845), English locksmith, started a hardware business
at Winchester, subsequently removing to Portsea. Here he improved on the
"detector" lock (q.v.), originally patented in 1818 by his brother,
Jeremiah Chubb. He soon moved to London and then to Wolverhampton, where
he employed two hundred hands. In 1835 he patented a process intended to
render safes (q.v.) burglar-proof and fireproof, and subsequently
established a large safe-factory in London. He died on the 16th of May
1845, and was succeeded in the business by his son, John Chubb
(1816-1872), who patented various improvements in the products of the
firm and largely increased its output. The factories were combined under
one roof in a model plant, and the business grew to enormous
proportions. After John Chubb's death the business was converted into a
limited company under the management of his three sons.

CHUBB, THOMAS (1670-1746), English deist, the son of a maltster, was
born at East Harnham, near Salisbury, on the 29th of September 1679. The
death of his father (1688) cut short his education, and in 1694 he was
apprenticed to a glove-maker in Salisbury, but subsequently entered the
employment of a tallow-chandler. He picked up a fair knowledge of
mathematics and geography, but theology was his favourite study. His
habit of committing his thoughts to writing gave him a clear and fluent
style. He made his first appearance as an author in the Arian
controversy. A dispute having arisen about Whiston's argument in favour
of the supremacy of the one God and Father, he wrote an essay, _The
Supremacy of the Father Asserted_, which Whiston pronounced worthy of
publication, and it was printed in 1715. A number of tracts followed,
which were collected in 1730. For several years Chubb lived in the house
of Sir Josep